Stock-quotation projector.



B. A. PROCTOR.

STOCK QUOTATION PROJECTOR.

APPLICATION FILED MAR. 23, l9l8.

Patented-Apr. 1,1919.

2 SHEETS-SHEET 1- INVENTOR ATTORNEY-S B. A. PROCTOR.

STOCK QUOTATION PROJECTOR.

APPLICATION FILED MAR. 23. 1918.

1,299,024, 4 Patented Apr. 1, 1 919.

2 SHEETS-SHEET 2.

INVENTOR My, War Vig l 1963x555 neuron A. raocroa, or NEW Yonx, N. Y., ASSIGNOR To 1 amount, NEW YORK.

ma 0. MEYER, or

STOCK-QUOTATION PROJECTOR.

Specification of Letters Patent.

Patented Apr. 1, 1919.

Application a... March 2a, 1918. Serial No. 224,145. I

To all whom it may concern:

Be it known that I, BARTON A. PRoo'r0R a citizen of the United States, residing at New York city, in the county and 'State of New York, have invented certain new and useful Improvements in Stock-Quotation Projectors, of which the following is a full, clear,

and exact description. I

My invention is an nnprovement 1n apparatus'for. projecting the printed stock uotations from a ticker tape onto a sur ace where they will be visible in e n1arged.char-, acters to any number of persons at the same time. 7 Such machines have been heretofore proposed and designed in various forms, but

' none have proved satisfactory or practicable, generally for obvious reasons, and the device upon which this application is based was devised by me as a result of my exper ence with and study of the failures in this linewhich preceded it. The invention resides in the means and devices which I have utilized and applied for the accomplishment of the, end in view.

In the drawings hereto annexed,

Figure 1 is a view in elevation of my complete machine in connection with a stock ticker. V

Fig. 2 is a vertical section of the same.

Fig. 3 is an enlarged detail of the light, lenses and appurtenances for projecting the quotations. 1

Fig. 4 is a detail of a modification.

The mechanism which I employ is contained in a suitable cabinet or case 1 supporting a ground glass plate 2, at the back of a hood 3, and when in use is placed adj acent the ordinary ticker instrument 4:, the tape from V which as through the projector. Beneath the hood or plate 2' is mounted in' the case a box 5 of metal or other fire proof material which is ventilated by anair box 6 leading upward from slots or perforations 7 to the bottom" of box 5 and by a continuation 8 of such air boxor passage from the box 5 to the slots or of the case} I Within the box 5 are mounted two incandescent lamps 10 or other suitable sources of light, andiabove these lamps is a tape guide 11 with the underside cut away, as shown in Fig. 3. Thereis also placed in the box 5 or in close relation therewith, a motor box 12 printed is carried perforations 9 near the top containing any suitable source of power such as a clock work that imparts :rotation,

to two presser rolls 13. The ta e 14 as it issues from the ticker 1s carrie into the case and over an idler 15, around a disk or wheel lfithrough the guldell and between thepresser roller 13 out of the case. Normally therefore under such conditions the tape would be drawn continuously through the instrument, the printed figures thereon reflected through the lenses 17 onto an inclined mirrored surface 18, thence to another mirror 19, and thence onto the ground glass plate 2.

It is important, if not essential, that the travel of the tape through the projector should be in approximately exact proportion to the rate at which it issues from the ticker, andthat no undue strain should be put upon it. For this purpose'I employ a pivoted lever 20, having a long arm, the end of which is designed to bear upon the tape. Normally this arm is held bv its wei ht on the tape and with ,sufiici'ent force to epress the same at the point of contact, but should there be anv appreciable pull on the tape the arm 22 is raised, whereupon the shorter arm 23 is depressed, and this comes into engagement with a fan or equivalent device 24, and stops the motor. As soon as the strain on the tape ceases, the arm 22 again descends and the motor starts in operation.

In order that the motor may not operate when the tape breaks or no tape is passing, I employ a pivoted stop lever 25 with a roller at one end that normally bears upon the tape over an opening in its guide. Should the tape not be passing the roller drops through this opening and carries the other end of the lever into engagement with the fan 24, and stops the motor.

It 'is very essential in machines of this class to provide against all possible results of overheating, and for this purpose I use a thermostatic bar 26 which is mounted in the box 5,and which when subjected to too high a temperature, bends. sufficiently to break the lamp 10, as shown in Fig. 4, is arranged above the lenses 32, which project the quotations upon a suitable reflecting surface. This arrangement permits the use of a heat absorbing cell 33 to reduce the efi'ect of the temperature on the tape.

The mechanism specifically described above I have used with success, and to great advantage, but it will be understood that except functionally it is not of the essence of the invention. Many changes in it may be made where found desirable or necessary.

What I claim is 1. A stock quotation projector comprising in combination, a vertical cabinet, a closed box contained therein, an open ventilating passage extending vertically through the cabinet and including the closed box, a tape guide, a tape feeding mechanism and a source of light all contained within the said box, a lens in the wall of the box for enlarging and projecting the reflected images of printed characters on the tape out through the wall of the box and reflecting surfaces for projecting such images onto a surface from which they may be read by bystanders. s

v2. A stock quotation projector comprising in combination, a vertical cabinet, a closed box of fire-proof material contained therein, a ventilating passage through the cabinet including the said box and open at its upper and lower ends to the outside air, a tape guide, and a source of light in said box, a lens holder set in the wall of the box and lenses therein for enlarging and'projecting the reflected images of the printed quotations on the tape out of the box and onto a surface from which they may be read by bystanders.

3. In a stock quotation projector, the combination with a tape guide and means for,

be in proportion to the rate at which it issues from a ticker mechanism.

4- In a stock quotation projector, the combination with a cabinet, a box of fire proof material therein, a tape guide and an electric lamp contained in said box, a ventilating passage through the box open at its ends to the outside air, a door for closing the passage from the box, heat controlled means for closing said door upon a given rise of temperature in the box and a thermostat within the box adapted on such rise of temperature to cut the lamp out of circuit.

. 5. A stock quotation projector, comprising, in combination, a case, a closed box therein, a ventilating passage from the bot-' tom to the top of the case including the closed box, a tape guide, tape feeding mechanism, and lamps contained in the closed lgox and a projecting lens in the wall of said In testimony whereof I hereunto afiix my signature.

' BARTON A. PROOTOR. 

